It's rarely so expensive. I find it bounces around 9 billion, and you can sometimes get it as low as your 8.xx billion RC.
I also wouldn't worry about using it up. At the point when someone has enough to claim accounts, you're recharging fast enough for any normal user to never run out, even if they take themselves to 0.1%
Posted using Partiko Android
I second that 👌 pretty quick recharge and usually enough RC to do the normal activity.
Posted using Partiko iOS